Wrapping-machine.



R. F. STEWART.

WRAPPING MACHINE. APPLICATION FILED 11311.5, 1912.

1,062,262", Y Patented May 20, 1913.

" B SHBETE-QHEET 1.

a u mambo p Witweoseo R; P. STEWART.

WRAPPING MACHINE.

APPLICATION FILED JAN. 5, 1912.

Patented May 20, 1913.

6 SHEETS-833E132,-

ave/whoa R. F. STEWART.

WRAPPING MACHINE.

APPLICATION FILED JAN. 5, 1912.

Patented May 20, 1913.

6 smmysmm a m". STEWART. WRAPPING MACHINE APPLICATION FILED JAN. 5,1912.

media May 20, 1913 6 SHEETS-SHEET 4.

awuwntor/ R. F. STEWART. WRAPPING MAGHINE.

APELIUATIO-N FILED JAN. 5, 1912.

? atented May 26, L13

6 SHEETS-QHEET 5.

@muzuijoz R. P. STEWART. WRAPPING MACHINE.

APPLIOATION FILED urns. 1912.

Patented May 20, 1913.

a snnmwmnm e.

s Announce.

RICHARD F. STEWART, 0'5 BRIARCLEFE MAHQE, NEW YORK.

"synonyms-machine.

Specification of Letters Patent.

Patented Mary 20, 193.3.

Application filed January 5, 1912. Serial Ho. 669,686.

To all whom it may concern: 7

Be it known that l, RICHARD F. STEWART, a citizen of the United States,residing at Briarcliti" Manor, in the county of 'Westchester and Stateof New York, have invented new and useful Improvements inrapping-Machines, of which the following is a specification.

The present invention relates to Wrapping machines, and has foritsobject to provide a machine in which commodities to be wrapped may befed, wrapped and delivered automatically Without the necessity ofhandling after once' they have been placed in the machine.

In the present embodiment of the inven tion shown, I have illustratedand shall describe it as a machine for Wrapping prints of butter, but itwill be understood that it not confined to this particular commodity,but may be used for Wrapping any comnloilit y with such mechanicalvariations as may be desirable Without departing from the spirit of myinvention, and all such mechanical variations as are obvious expedientsor substantial equivalents of the devices shown and described are, ofcourse, Within the range of my invention. lrrorder that the inventionmay be further understood by those skilled in the art, I haveillustrated in the accompanying drawings the preferred embodimentof theinvention, in which drawingsk Figure l is a side elevation of a machineembodying my invention. Fig. 2 is a side elevation taken from theopposite side of the-machine from that shown in Fig. 1. Fig. 3 is a planview of the machine shown in Figs. 1 and 2. Fig. 4 is a sectional viewlengthwise of the machine and substantially upon the longitudinal centerthereof. Fig. 5 is a detail view somewhat enlarged of a portion of themachine suflicient to show the sheet gripper and its operatingmechanism. Figs. 6 and '7 are sectional and elevational viewsrespectively of the sheet gripper. Figs. 8 and 9 are detail viewsenlarged to show folders for handling the wrappers and laying them aboutthe article being Wrapped. Referring to'the drawings by letters, likeletters indicating like parts in the several views. A denotes the tableor frame for the machine. Mounted in suitable supporting standardsrising from the table A .is the main shaft B for driving the severalmechanisms, which shaft may be conveniently driven by any suitablemeans, as manually by the handle C, or mechanically by the motor D, themotor when used being geared in any suitable manner, as by the worm andgear connection E, shownin Fig. i. The said power shaft B is providedwith suitably plotted operating cams for imparting movement to theseveral mechanisms of the ma-' chine in properly timed relation, andreference will be madeto these cams in connection with the paroicularmechanism which they operate.

The print f:i 6(Z---lI lll1iS of butterare placed on a receiving boardor table F, best arranged for-the purpose of supplying the machine, andadjacent said table is a print feedin board onto which the rints ma .e 1y be shot from the table F in any number Within the capacity of theboard, as for example six, and this may be done Without; the

necessity of the operative touching the prints at all, for it will beunderstood that as the v trays of prints are brought from the cuttingmachine and deposited on the table F, they may bethen slid by anysuitable means from their position on the table F to the board he heardf is hinged at f adjacent the feed hopper f of the machine. and isprovided with a lifting handle at its opposite T he board f when swungupwardly to the dotted line position shown in Fig. 4: "will deliver itsload of prints to the hopper, so that they will stand in a pile in thehopper f, when the board f may be lowered to its normal position toreceive the next charge of prints from the table F. I

The pile of prints in the hoppe'r f 'will rest upon a movable bottomboard or table f carried by an arm f pivoted to the frame oi the machineat f, as shown in Fig. 4, and weighted at its outer end so as to holdthe table f normally in the position shown in full lines in Fig. l. Thesaid arm f carries niche and break arm f operatively placed with respectto an electric switch .f which controls the circuit through the motor D,so that when the machine is motor driven the table f will control themotor, starting Y end by which it may be swung on its pivots.

' Whether ornot there is sm'lioient e thetehle'f to prevent the out outcl by a connection g to the ineehine as at gyhbhnt the main. shaft andplunger returns after pus from the table f the po'sit-ionnnd operate theout out "to stop will be .50. positioned that will rise and the out outl. befo re the pier 'er I rearward pos' to depress it, and uitting ithopper is emptied and the tehl-z the overbelanoing Weight on o. e armThis Weight f is z djnste s to accurate balancing table j is; arm funder all conditions The prints-in the/hopper f areedelivewed from thehottomjof the pile by ins push plate or plunger G, mounted in themaohine frame, and I ted oy means of a lever g linked in its lOl'vul.end

The said lever gds connected by eznn rod g with ano'perating earn 9 on tin shaft B, this oamrod being forked or lo thereby; and being providedWit-he eel n roll or pin 9 engaging a suitable cam groove in the camplate 9 this oem h as to give to the mechanism just deserined a quickforward feeding movement and return tothe plnngerG with a snilleientdwell between the returnv'zind feed to wrapping-mechanism, presently iscribed, to perform its Wonk print' prior to "the feeding '1. next one.-4 When-the machine is "'l by t a trio motor, and the out out d .iet foredescribed is in position, it is essential that the table f shell permitthe to the return of the plnn LO its is] M... pos1t1on,,a;s shown in Fto moon plish this I provide him table f after the last print s beenfrom the hopper, cannot liftuntil the p? ger G has'made its full rel asshown, comprises the table support f and or depression in the lo G, asbest shown in F butter inthehopper res this finger g" is, of eonr. I ithe" groove in the plunger will rise and finger 'enter.tl1'e groove inthe plunger as to permit the table to. move to its rare motor. It willbe-observedthet the plunger G however'will bear against the finger 5/itjmo'ves forward, and maintain it end the armlf with the table fdepressed until the plunger G has made its full reti I. Venting the i nom en ns opposite end. rznehet wheel if.

so plo ted 0 he de-' r a shaft 12 sold shalt having at The sz id ratchetWheel 72- is operated by means of a pawl it mounted on e pllOlQ Ciconcentrically with he eenter oi the I. ratchet Wheel and n. .meeted. bya rod h with a swinging; arm It eerried by shaft 714 .9

jonrnaled in the machine frame. The said arm it is so placed (s to heen- 1 he once every revolution, H8 main shaft, and under normalconditions will s np'the ratchet wheel h, if. 1 'Wl'ieel 71- and hereel; if end the It will thus he s lift is given to that this lift mustels of the stack, nor lagging be no be uniform, Hi

necessary to?"- feeder of the s pivoted feeler e rook shaft h as endhaving at d. by

' arrange the stack 1 "1e ratchet pawl, '36 n ler roll 0 and tied gee rlilechsnl v I, 7 V i 1 shalt/h 'Wlll he roamed and through the 75 andlink it the pawl fz will be liftstaeli: perrhitsthe feeler roll h tofallsufiilonger being carried forward by rk 71F which. is engaged by a dby roll 3;, on the cam h, so

1 automatic con-- link h" v eiently to permit eng emen't of the pawl,

end ratchet; Preferah a pawl 7L will. be

provided to prevee anyaccidental reverse movement of the ratchet l3, andlowering of.

the ste'olz, and l contemplate also providing the shaft :1 crank: girm h(see Fig. l '3 met; the stile supporting hoard. me}? he run eiid do'wnmanually when i the steel: of Wrape oosition shown m of the stack meansofsuitmg guard or plate 71 being provided in aosaaoa able 'points itadjustably mounted in lugs on the wrapper box, the pins serving to holdthe sheets from accidentally slipping from the top of the stack becauseof the inclination of the stack, and yet offering no material resistanceto the pulling; off of the top wrapper as it is mechanically fed. Thismechanical feeding of the wrapper is actop of the Wrapper box, andhaving at one end a sprocket wheel it having a chain connection with asprocket wheel 7: on a shaft [L23 mounted in bearings near the inner ordelivery end of the wrapper box so that as the shaft 71 is rotated theshaft 11. with its feeding fingers it will be operated and the topwrapper will be slid oifof the stack and fedforw-ard from the box onto aroll it atthe forward end of the box where it will be caught by thefriction surface of the two feeding segments W and carried downward overan apron if, a sheet directfront of the apron to direct the forward edgeof the wrapper upon the feed downwardly, The wrapper will be thrust downbetween the bite h of the guard 7L and theapron h as best shown in Fig.4, and

will be there lightly gripped and suspended "ready to be seized by thegripper which will now be described.

The sheet grippen- Ihe sheet gripping mechanism comprises two jaws is,is, one of which jaws 7c is carried by a sleeve k sliding on asupporting rod while jaw it" is pivoted at in to the first named jaw,and has a projecting arm k connected by a spring 7: to a fixed lug onthe sleeve k so as to be normally under tensiouwith the jaws in closedor gripping position. Movement of the jaw k may be regulated by means ofa screw k (see Figsb and 7) which is adjustable to and from a notchedwall in the movable jaw k so as to: limit the swing of the jaw is andregulate its grip relative to the fixed jaw 72.

rod 70 by means of a link k and lever 70 The sleeve 10 is raised andlowered on its Said lever 74 being carried by a rock shaft 7%", whichthibugh the arm is and cam roll la" is oscillated at regular intervalsfromthe cam roll 70 which engages a cam groove k in the cam k mounted onthe mam shaft B of the machine, and preferably the cam rod is will beforkedor looped on the main shaft B for support. The timing is such thatthe wrapper feeding. mechanism above described, and the sheet grippingmechanism just set forth will so cooperate as to bllngille sheet gripperto its upper dotted line position, as shown in Fig. 5 just as thewrapper feed delivers a sheet from the stack down the throat of themachine. The grippers 7;, 7c are normally held open by means of a dog7.1 the nose of which jaws will be open and will so remain until thelower edge of a wrapper has dropped between them. At this point andbefore the gripper starts downwardly, the arm is, which is pivoted tothe machine frame and operated through the arm k having a cam roll 6engaging a groove is in the cam h mounted on the main shaft B, swingsforward to the dotted line position shown in Fig. 5, and then swingsback to its full line position. The arm is carries at its upper end ashoe 7c so positioned as to engage a pin it on the arm is as the arm isswings back, depressing the arm 74*" and throwing the nose of the dog kinto line with the notch 70 whereupon the spring is will pull the arm 10down, throw the jaws of the gripper together, and 'grasp the dependingend of the wrapper. The gripper then descends to thefull line position,shown in Fig. 5, whereupon the arm 7c" strikes the hub 39 of the arm isthrowing the nose out of the notch and separating the jaws, as shown.

The wrapper folding mechan-ism.Atthis pointin the operation of themachine the wrapper will be held suspended from the lightspring grip ofthe guard plate 71 and the apron IF across the path of movementof theprint, and as the plunger G heretofore "described pushes the print fromthe pile and, 0d the table, the advancing print will engage the' wrapperand thrust it across the throat of the machine into a folding chute L sothat the print with the Wrapper laid about its top, side and bottom willlie between the chute L and a top plate Z (see Fig; 4) and in positionfor completion of the wrapping. The said top plate Z is mounted on ayielding bar Z so as tobear lightly on the article, and may, if desired,be weighted, asishown in dotted lines to increase the pressure. Thefolding of the wrapper about the opposite side of the print isaccomplished by two fold-j ing bars Z 1 shown in detail in Figs. 8 and9, said folding" bars being connected to arms Z pivoted, as shown inFig.1, to.

the machineframc. The said folding bars 'Z, Z are operated by means of aswitch plate neath the switch 1 and. then over the top of slightly 1which is carried by a frame Z connected at one end to the plunger G,the'other encltracks Z and switch hloclrsjl which hloclrs -.are weightedat 01105166 so as to. normally liein the full line position shown iiiFig. 8', and one. of the switch blocks and tracks (the lower one "in thepresent showing) 1s bar Z a slight lead over the upper liar Zthe'sW-itch plate is reciprocated the Z will traverse the pins Z, and asthe pin Z". on the lower bar Z traversesithe track-Z during thereciprocatingmovement cfthe switch block Z it will alternately passhethat switch, this resulting in a raisin and dropplng of the foldingbar 5" its track in the switch plate a-nrl the oar will v lay ing beingsuch thatthcse end fo ds .jor the effect the lapping oi the wrapoer.That is,

the lower -fold is first laid against the print cfhuttcr, and then theupper fOidlS laniin lapped condition over the first told. immediateiythis sidc folding of the is effected the end foltling operation begins,and this enrl folding 1S efi'ectc'd lay the folrling slides? which lieone on either sirle of the plunger G within thehopper 7, these foldingplates Z h actuated by the lever E, which in turn is actuated by the camlever Z having cam roll Z engaging a cam groove Z in the cam 72,- onthe'main shaft B. The plates Z are thrust forward past either end f't-heprint about, which. the Wrapper has "been laid and snake the initial endfolds, the opposite end told-s beingeffected by the places 5 carried bythe slide rods l, which rods are operatetlhy the arm 2 connected withcam lever Z operated froni a cam roll 2 on the cam 713 the tiinsides ofthe rapper will lie-made in close relation toeach other, the plates-Zoperatrl'vance-oitthe plates Z,

The top and bottom folds for the Wrapper "cndls are eifectetl hythe wellofthe chute through which the Wrapper prints are forced the. succeeding.prmts, and as shown-1n Fig. 4; as the print passes along the table L,the bottom end fold will he forrcaed by means of the incline 33?, whichwill gradually turn upthe'projecting encl fiat against the eml of theprint, an'rl directly thereafter ilie'top end. fold will be formed. by.the incline Z (loam which the end Ltolrl will rirle nntii the end foldis laicl flat agxinst the e116. of the print, anti erahly I provirlethetop plate i of '5? e ch? printsslide to a tray orhoarri E which isadvanced so to ive the lower- AL ,l- 1 Z25 q T I "r I I 3 1100.5 en a inru s a en -he conveniently and taken to the packing cases or in nin.vtraverses the triangular path formed by the I being hula: fed, thelower fclcl of the z rrapper. The upper bar Z operates in identicallythe same \\ay, exc'eptthat above stated 1t lags little behind the first.bar'so as to properly he entirely antomamc i up again when a supply isexhausted.

combination or the i 'fi I messes with burning. fingers Z whit h orstartthe" top end. foul as t print along 111 reachness for en gaging theincline 1 From the chute or print best we Wrapped preferably inclined soas to insure th L slirlingdown easily anal prevent oli *1 muchresistance and ccnse'ofc to the advancing prints thrust orwa theplunger, and preferably t.

LE; x will be mace, as shown, the tray :tecl with Without the frame sothat Wi From the fore oing itwili he use of this machine '1? tiously.hanrllecl anil- W1" necessity of the op r2 prints with his. hcnrls,

tron

31nd. or

prints lest. so it. 'is

etire Y chines in which plying, Wrapping and. long as hopper is entirelypssih handle a mural the hopper so machine will power cnci come to aresh sap ly has he placed iii the hopper. Iurthermore, handling of the(lone a'w'ay with, .for the machine once sojoplieri memstacla'. willautomatically feerl it}; Wrappers 'ont ii the Having thus clescrilerl-the invention .What' I claim as new is I I l.- In a machine cit-heclass'described, the 10s combination of the following instrumental?ties: article feeding means-wrapping mech anism, a feeding hopper, afeeifl hoard oper able to deliver a stack of ariiclesto said hopper,and, receiving; adjacent saicl m feerlhoardf 2'. in a machine of theclass described, the combination of the iollowing iiistrumentalities:article feeding .mecha-nism, wrapping mechanism, means" for driving saidmechanisms, start and. sto;,--mechanism L fer said driving means, afeeding hopper, means in said hopper controlled by the hopper contentsto operate said start and, stop mechatfl nism, and means to prevent thestopping of 129 said. driving means eicept when said article", feedingmechanism in a retractecl position.

v 8. In a machine of the class described, the

" liOWlZl instrumentali- 7 sin, WTSLIJQll'lQ 112i saicl macho ties;articl IQJ 1:

said hopper having connection with said.

switch to actuate said start and stop mecha nism,

means on said arm cotiperating with said article feeding mechanism toprevent stopping of the driving means except when said article feedingmechanism is in retracted position.'

5. In. a machine of'the class described, the combination of thefollowing instrumentalities: article feeding mechanism, wrappingmechanism, means for driving said mechanisms, start and stop mechanismfor said driving means, a feeding-hopper, a movable bottom in saidhopper, a weighted pivoted arm supporting said movable bottom, meanscarried by said arm' for. controlling said start and stop mechanism, anda Pl'0]BCl3lOD on said arm to engage said article feeding mechanism andprevent movement of said arm and stopping of the driving means exceptwhen said article feeding mechanism is in retracted position. i

6. In a machine of the class described, the combination of the followinginstrumentalities: a feeding plunger, plunger feeding mechanism,wrapping mechanism, means for driving said mechanisms, start and stomechanism for said driving means, a fee ing hopper, a movable bottom insaid hopper, a pivoted arm supporting said movable bottom andcontrolling said start and stop mechanism, and a finger projecting fromsaid arm and adapted to engage a recess in said plunger when the plungeris in a predetermined position to permit the. automatic stopping of saiddriving means.

7. In a machine of the class described, the

' combination of the following instrumentalities: an article feedingplunger, plunger feeding mechanism, wrapping mechanism,

,means for driving said mechanisms, start and stop mechanism for saiddriving means, a feeding hopper, a movable bottom in said hopper, apivoted arm supporting said movable bottom and arranged beneath saidpluna finger projecting upwardly from said arm in the path of saidplunger and adapted to enter a recess in said plunger when the latter isin a predetermined position, and connections from said arm to said startand stop mechanism.

8. In a machine of the class described, the combination of the followinginstrumentalities: article feeding mechanism, wrapping mechanism, anelectric motorv for driving said mechanisms, start and stop devices forsaid motor, a feeding hopper, means in said hopper operable by thearticles therein controlling said start and stop mechanism, and meanscarried by said article feeding means to prevent operation of the startand stop mechanism except when saidarticle feeding mechanism is in apredetermined position.

9.'In a machine of the class described, the combination of the followinginstrumentalities: a plunger for feeding articles'to be wrapped, meansfor supplying a wrapper acrossthe path of travel of the article fed bythe plunger, a receiving chute to which said article and wrapper isdelivered, side folding bars to lap the rear ends of the I wrapper aboutthe article, and a reciprocating switch block having a double trackwayfor said bars adapted to operate said folding bars in sequence.

10. In a machine of the class described, the combination of thefollowing instrumentalities: a plunger for feeding articles to bewrapped, means for supplying a wrapper across the path of travel of thearticle fed by theplunger, a receiving chute to which said article andwrapper is delivered, pivotally mounted" side folding bars adjacent saidfolding chute, and a switch block having offset bar operating trackstoeffect the operation of one of said folding bars slightly in advance ofthe other.

11. In a machine of the class described, the' combination of thefollowing instrumentalities: a plunger for feeding articles to bewrapped, means for supplying a wrapper across the path of travel of thearticle fed by'the plunger, a receivingchute to which said arti*le andwrapperis delivered, side folding bars to lap the rear ends of thewrapper about the article, and a switch block having bar operatingtracks and barcont-rolling switch points offset from each other toefi'ect the operation of one of said bars slightly in advance of theother.

12. In a machine of the class described, the combination of thefollowing instrumentalities: an article feeding plunger, wrappersupplying means adapted to deliver a wrapper across the path of travelof the article, a folding chute to which saidarticle is delivered havinga yielding top, and end fold-' ing inclines on said yielding top.

13. In amachine of the class described, the combination of the followinginstrumentalities: an article feeding plunger, wrapper supplying meansadapted to deliver a wrapper across the path of travel of the article, afolding chute, a yielding top for said chute, end folding inclines onsaid yielding top, and inclines in the sides of said chute to completethe end folding.

14:. In a machine of the class described, the combination of thefollowing instrumentalities: article feeding means, wrapper supplyingmeans, a feiciing chute folding instrument-alities ,coiipei'ating withsaid chute to fold the Wrapgaer afbeut she article, ami inclinedremovable tray supported whelly 5 0n and extending outwardly from theend 0 said chute.

In testimony whereof I have hereunto set w my hand in presence of twosubscribing Witmesses. I

RICHARD F. STEWART,

Witnesses:

WILLIAM 13.. 2mm, .KATI-IERINE C. GLANVILLE:

